public final class io.reactivex.internal.operators.observable.ObservableUsing<T, D> extends io.reactivex.Observable<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.reactivex.internal.operators.observable.ObservableUsing
  super_class: io.reactivex.Observable
{
  final java.util.concurrent.Callable<? extends D> resourceSupplier;
    descriptor: Ljava/util/concurrent/Callable;
    flags: (0x0010) ACC_FINAL
    Signature: Ljava/util/concurrent/Callable<+TD;>;

  final io.reactivex.functions.Function<? super D, ? extends io.reactivex.ObservableSource<? extends T>> sourceSupplier;
    descriptor: Lio/reactivex/functions/Function;
    flags: (0x0010) ACC_FINAL
    Signature: Lio/reactivex/functions/Function<-TD;+Lio/reactivex/ObservableSource<+TT;>;>;

  final io.reactivex.functions.Consumer<? super D> disposer;
    descriptor: Lio/reactivex/functions/Consumer;
    flags: (0x0010) ACC_FINAL
    Signature: Lio/reactivex/functions/Consumer<-TD;>;

  final boolean eager;
    descriptor: Z
    flags: (0x0010) ACC_FINAL

  public void <init>(java.util.concurrent.Callable<? extends D>, io.reactivex.functions.Function<? super D, ? extends io.reactivex.ObservableSource<? extends T>>, io.reactivex.functions.Consumer<? super D>, );
    descriptor: (Ljava/util/concurrent/Callable;Lio/reactivex/functions/Function;Lio/reactivex/functions/Consumer;Z)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // io.reactivex.internal.operators.observable.ObservableUsing this
        start local 1 // java.util.concurrent.Callable resourceSupplier
        start local 2 // io.reactivex.functions.Function sourceSupplier
        start local 3 // io.reactivex.functions.Consumer disposer
        start local 4 // boolean eager
         0: .line 33
            aload 0 /* this */
            invokespecial io.reactivex.Observable.<init>:()V
         1: .line 37
            aload 0 /* this */
            aload 1 /* resourceSupplier */
            putfield io.reactivex.internal.operators.observable.ObservableUsing.resourceSupplier:Ljava/util/concurrent/Callable;
         2: .line 38
            aload 0 /* this */
            aload 2 /* sourceSupplier */
            putfield io.reactivex.internal.operators.observable.ObservableUsing.sourceSupplier:Lio/reactivex/functions/Function;
         3: .line 39
            aload 0 /* this */
            aload 3 /* disposer */
            putfield io.reactivex.internal.operators.observable.ObservableUsing.disposer:Lio/reactivex/functions/Consumer;
         4: .line 40
            aload 0 /* this */
            iload 4 /* eager */
            putfield io.reactivex.internal.operators.observable.ObservableUsing.eager:Z
         5: .line 41
            return
        end local 4 // boolean eager
        end local 3 // io.reactivex.functions.Consumer disposer
        end local 2 // io.reactivex.functions.Function sourceSupplier
        end local 1 // java.util.concurrent.Callable resourceSupplier
        end local 0 // io.reactivex.internal.operators.observable.ObservableUsing this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    6     0              this  Lio/reactivex/internal/operators/observable/ObservableUsing<TT;TD;>;
            0    6     1  resourceSupplier  Ljava/util/concurrent/Callable<+TD;>;
            0    6     2    sourceSupplier  Lio/reactivex/functions/Function<-TD;+Lio/reactivex/ObservableSource<+TT;>;>;
            0    6     3          disposer  Lio/reactivex/functions/Consumer<-TD;>;
            0    6     4             eager  Z
    Signature: (Ljava/util/concurrent/Callable<+TD;>;Lio/reactivex/functions/Function<-TD;+Lio/reactivex/ObservableSource<+TT;>;>;Lio/reactivex/functions/Consumer<-TD;>;Z)V
    MethodParameters:
                  Name  Flags
      resourceSupplier  
      sourceSupplier    
      disposer          
      eager             

  public void subscribeActual(io.reactivex.Observer<? super T>);
    descriptor: (Lio/reactivex/Observer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=6, args_size=2
        start local 0 // io.reactivex.internal.operators.observable.ObservableUsing this
        start local 1 // io.reactivex.Observer observer
         0: .line 48
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableUsing.resourceSupplier:Ljava/util/concurrent/Callable;
            invokeinterface java.util.concurrent.Callable.call:()Ljava/lang/Object;
            astore 2 /* resource */
        start local 2 // java.lang.Object resource
         1: .line 49
            goto 6
        end local 2 // java.lang.Object resource
      StackMap locals:
      StackMap stack: java.lang.Throwable
         2: astore 3 /* e */
        start local 3 // java.lang.Throwable e
         3: .line 50
            aload 3 /* e */
            invokestatic io.reactivex.exceptions.Exceptions.throwIfFatal:(Ljava/lang/Throwable;)V
         4: .line 51
            aload 3 /* e */
            aload 1 /* observer */
            invokestatic io.reactivex.internal.disposables.EmptyDisposable.error:(Ljava/lang/Throwable;Lio/reactivex/Observer;)V
         5: .line 52
            return
        end local 3 // java.lang.Throwable e
        start local 2 // java.lang.Object resource
         6: .line 57
      StackMap locals: java.lang.Object
      StackMap stack:
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableUsing.sourceSupplier:Lio/reactivex/functions/Function;
            aload 2 /* resource */
            invokeinterface io.reactivex.functions.Function.apply:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast io.reactivex.ObservableSource
            ldc "The sourceSupplier returned a null ObservableSource"
            invokestatic io.reactivex.internal.functions.ObjectHelper.requireNonNull:(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
            checkcast io.reactivex.ObservableSource
            astore 3 /* source */
        start local 3 // io.reactivex.ObservableSource source
         7: .line 58
            goto 18
        end local 3 // io.reactivex.ObservableSource source
      StackMap locals:
      StackMap stack: java.lang.Throwable
         8: astore 4 /* e */
        start local 4 // java.lang.Throwable e
         9: .line 59
            aload 4 /* e */
            invokestatic io.reactivex.exceptions.Exceptions.throwIfFatal:(Ljava/lang/Throwable;)V
        10: .line 61
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableUsing.disposer:Lio/reactivex/functions/Consumer;
            aload 2 /* resource */
            invokeinterface io.reactivex.functions.Consumer.accept:(Ljava/lang/Object;)V
        11: .line 62
            goto 16
      StackMap locals: io.reactivex.internal.operators.observable.ObservableUsing io.reactivex.Observer java.lang.Object top java.lang.Throwable
      StackMap stack: java.lang.Throwable
        12: astore 5 /* ex */
        start local 5 // java.lang.Throwable ex
        13: .line 63
            aload 5 /* ex */
            invokestatic io.reactivex.exceptions.Exceptions.throwIfFatal:(Ljava/lang/Throwable;)V
        14: .line 64
            new io.reactivex.exceptions.CompositeException
            dup
            iconst_2
            anewarray java.lang.Throwable
            dup
            iconst_0
            aload 4 /* e */
            aastore
            dup
            iconst_1
            aload 5 /* ex */
            aastore
            invokespecial io.reactivex.exceptions.CompositeException.<init>:([Ljava/lang/Throwable;)V
            aload 1 /* observer */
            invokestatic io.reactivex.internal.disposables.EmptyDisposable.error:(Ljava/lang/Throwable;Lio/reactivex/Observer;)V
        15: .line 65
            return
        end local 5 // java.lang.Throwable ex
        16: .line 67
      StackMap locals:
      StackMap stack:
            aload 4 /* e */
            aload 1 /* observer */
            invokestatic io.reactivex.internal.disposables.EmptyDisposable.error:(Ljava/lang/Throwable;Lio/reactivex/Observer;)V
        17: .line 68
            return
        end local 4 // java.lang.Throwable e
        start local 3 // io.reactivex.ObservableSource source
        18: .line 71
      StackMap locals: io.reactivex.internal.operators.observable.ObservableUsing io.reactivex.Observer java.lang.Object io.reactivex.ObservableSource
      StackMap stack:
            new io.reactivex.internal.operators.observable.ObservableUsing$UsingObserver
            dup
            aload 1 /* observer */
            aload 2 /* resource */
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableUsing.disposer:Lio/reactivex/functions/Consumer;
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableUsing.eager:Z
            invokespecial io.reactivex.internal.operators.observable.ObservableUsing$UsingObserver.<init>:(Lio/reactivex/Observer;Ljava/lang/Object;Lio/reactivex/functions/Consumer;Z)V
            astore 4 /* us */
        start local 4 // io.reactivex.internal.operators.observable.ObservableUsing$UsingObserver us
        19: .line 73
            aload 3 /* source */
            aload 4 /* us */
            invokeinterface io.reactivex.ObservableSource.subscribe:(Lio/reactivex/Observer;)V
        20: .line 74
            return
        end local 4 // io.reactivex.internal.operators.observable.ObservableUsing$UsingObserver us
        end local 3 // io.reactivex.ObservableSource source
        end local 2 // java.lang.Object resource
        end local 1 // io.reactivex.Observer observer
        end local 0 // io.reactivex.internal.operators.observable.ObservableUsing this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   21     0      this  Lio/reactivex/internal/operators/observable/ObservableUsing<TT;TD;>;
            0   21     1  observer  Lio/reactivex/Observer<-TT;>;
            1    2     2  resource  TD;
            6   21     2  resource  TD;
            3    6     3         e  Ljava/lang/Throwable;
            7    8     3    source  Lio/reactivex/ObservableSource<+TT;>;
           18   21     3    source  Lio/reactivex/ObservableSource<+TT;>;
            9   18     4         e  Ljava/lang/Throwable;
           13   16     5        ex  Ljava/lang/Throwable;
           19   21     4        us  Lio/reactivex/internal/operators/observable/ObservableUsing$UsingObserver<TT;TD;>;
      Exception table:
        from    to  target  type
           0     1       2  Class java.lang.Throwable
           6     7       8  Class java.lang.Throwable
          10    11      12  Class java.lang.Throwable
    Signature: (Lio/reactivex/Observer<-TT;>;)V
    MethodParameters:
          Name  Flags
      observer  
}
Signature: <T:Ljava/lang/Object;D:Ljava/lang/Object;>Lio/reactivex/Observable<TT;>;
SourceFile: "ObservableUsing.java"
NestMembers:
  io.reactivex.internal.operators.observable.ObservableUsing$UsingObserver
InnerClasses:
  final UsingObserver = io.reactivex.internal.operators.observable.ObservableUsing$UsingObserver of io.reactivex.internal.operators.observable.ObservableUsing