public final class io.reactivex.internal.operators.observable.ObservableConcatMap<T, U> extends io.reactivex.internal.operators.observable.AbstractObservableWithUpstream<T, U>
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.reactivex.internal.operators.observable.ObservableConcatMap
  super_class: io.reactivex.internal.operators.observable.AbstractObservableWithUpstream
{
  final io.reactivex.functions.Function<? super T, ? extends io.reactivex.ObservableSource<? extends U>> mapper;
    descriptor: Lio/reactivex/functions/Function;
    flags: (0x0010) ACC_FINAL
    Signature: Lio/reactivex/functions/Function<-TT;+Lio/reactivex/ObservableSource<+TU;>;>;

  final int bufferSize;
    descriptor: I
    flags: (0x0010) ACC_FINAL

  final io.reactivex.internal.util.ErrorMode delayErrors;
    descriptor: Lio/reactivex/internal/util/ErrorMode;
    flags: (0x0010) ACC_FINAL

  public void <init>(io.reactivex.ObservableSource<T>, io.reactivex.functions.Function<? super T, ? extends io.reactivex.ObservableSource<? extends U>>, int, io.reactivex.internal.util.ErrorMode);
    descriptor: (Lio/reactivex/ObservableSource;Lio/reactivex/functions/Function;ILio/reactivex/internal/util/ErrorMode;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=5, args_size=5
        start local 0 // io.reactivex.internal.operators.observable.ObservableConcatMap this
        start local 1 // io.reactivex.ObservableSource source
        start local 2 // io.reactivex.functions.Function mapper
        start local 3 // int bufferSize
        start local 4 // io.reactivex.internal.util.ErrorMode delayErrors
         0: .line 38
            aload 0 /* this */
            aload 1 /* source */
            invokespecial io.reactivex.internal.operators.observable.AbstractObservableWithUpstream.<init>:(Lio/reactivex/ObservableSource;)V
         1: .line 39
            aload 0 /* this */
            aload 2 /* mapper */
            putfield io.reactivex.internal.operators.observable.ObservableConcatMap.mapper:Lio/reactivex/functions/Function;
         2: .line 40
            aload 0 /* this */
            aload 4 /* delayErrors */
            putfield io.reactivex.internal.operators.observable.ObservableConcatMap.delayErrors:Lio/reactivex/internal/util/ErrorMode;
         3: .line 41
            aload 0 /* this */
            bipush 8
            iload 3 /* bufferSize */
            invokestatic java.lang.Math.max:(II)I
            putfield io.reactivex.internal.operators.observable.ObservableConcatMap.bufferSize:I
         4: .line 42
            return
        end local 4 // io.reactivex.internal.util.ErrorMode delayErrors
        end local 3 // int bufferSize
        end local 2 // io.reactivex.functions.Function mapper
        end local 1 // io.reactivex.ObservableSource source
        end local 0 // io.reactivex.internal.operators.observable.ObservableConcatMap this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    5     0         this  Lio/reactivex/internal/operators/observable/ObservableConcatMap<TT;TU;>;
            0    5     1       source  Lio/reactivex/ObservableSource<TT;>;
            0    5     2       mapper  Lio/reactivex/functions/Function<-TT;+Lio/reactivex/ObservableSource<+TU;>;>;
            0    5     3   bufferSize  I
            0    5     4  delayErrors  Lio/reactivex/internal/util/ErrorMode;
    Signature: (Lio/reactivex/ObservableSource<TT;>;Lio/reactivex/functions/Function<-TT;+Lio/reactivex/ObservableSource<+TU;>;>;ILio/reactivex/internal/util/ErrorMode;)V
    MethodParameters:
             Name  Flags
      source       
      mapper       
      bufferSize   
      delayErrors  

  public void subscribeActual(io.reactivex.Observer<? super U>);
    descriptor: (Lio/reactivex/Observer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=3, args_size=2
        start local 0 // io.reactivex.internal.operators.observable.ObservableConcatMap this
        start local 1 // io.reactivex.Observer observer
         0: .line 47
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.source:Lio/reactivex/ObservableSource;
            aload 1 /* observer */
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.mapper:Lio/reactivex/functions/Function;
            invokestatic io.reactivex.internal.operators.observable.ObservableScalarXMap.tryScalarXMapSubscribe:(Lio/reactivex/ObservableSource;Lio/reactivex/Observer;Lio/reactivex/functions/Function;)Z
            ifeq 2
         1: .line 48
            return
         2: .line 51
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.delayErrors:Lio/reactivex/internal/util/ErrorMode;
            getstatic io.reactivex.internal.util.ErrorMode.IMMEDIATE:Lio/reactivex/internal/util/ErrorMode;
            if_acmpne 6
         3: .line 52
            new io.reactivex.observers.SerializedObserver
            dup
            aload 1 /* observer */
            invokespecial io.reactivex.observers.SerializedObserver.<init>:(Lio/reactivex/Observer;)V
            astore 2 /* serial */
        start local 2 // io.reactivex.observers.SerializedObserver serial
         4: .line 53
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.source:Lio/reactivex/ObservableSource;
            new io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver
            dup
            aload 2 /* serial */
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.mapper:Lio/reactivex/functions/Function;
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.bufferSize:I
            invokespecial io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver.<init>:(Lio/reactivex/Observer;Lio/reactivex/functions/Function;I)V
            invokeinterface io.reactivex.ObservableSource.subscribe:(Lio/reactivex/Observer;)V
        end local 2 // io.reactivex.observers.SerializedObserver serial
         5: .line 54
            goto 10
         6: .line 55
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.source:Lio/reactivex/ObservableSource;
         7: new io.reactivex.internal.operators.observable.ObservableConcatMap$ConcatMapDelayErrorObserver
            dup
            aload 1 /* observer */
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.mapper:Lio/reactivex/functions/Function;
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.bufferSize:I
            aload 0 /* this */
            getfield io.reactivex.internal.operators.observable.ObservableConcatMap.delayErrors:Lio/reactivex/internal/util/ErrorMode;
            getstatic io.reactivex.internal.util.ErrorMode.END:Lio/reactivex/internal/util/ErrorMode;
            if_acmpne 8
            iconst_1
            goto 9
      StackMap locals: io.reactivex.internal.operators.observable.ObservableConcatMap io.reactivex.Observer
      StackMap stack: io.reactivex.ObservableSource new 7 new 7 io.reactivex.Observer io.reactivex.functions.Function int
         8: iconst_0
      StackMap locals: io.reactivex.internal.operators.observable.ObservableConcatMap io.reactivex.Observer
      StackMap stack: io.reactivex.ObservableSource new 7 new 7 io.reactivex.Observer io.reactivex.functions.Function int int
         9: invokespecial io.reactivex.internal.operators.observable.ObservableConcatMap$ConcatMapDelayErrorObserver.<init>:(Lio/reactivex/Observer;Lio/reactivex/functions/Function;IZ)V
            invokeinterface io.reactivex.ObservableSource.subscribe:(Lio/reactivex/Observer;)V
        10: .line 57
      StackMap locals:
      StackMap stack:
            return
        end local 1 // io.reactivex.Observer observer
        end local 0 // io.reactivex.internal.operators.observable.ObservableConcatMap this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   11     0      this  Lio/reactivex/internal/operators/observable/ObservableConcatMap<TT;TU;>;
            0   11     1  observer  Lio/reactivex/Observer<-TU;>;
            4    5     2    serial  Lio/reactivex/observers/SerializedObserver<TU;>;
    Signature: (Lio/reactivex/Observer<-TU;>;)V
    MethodParameters:
          Name  Flags
      observer  
}
Signature: <T:Ljava/lang/Object;U:Ljava/lang/Object;>Lio/reactivex/internal/operators/observable/AbstractObservableWithUpstream<TT;TU;>;
SourceFile: "ObservableConcatMap.java"
NestMembers:
  io.reactivex.internal.operators.observable.ObservableConcatMap$ConcatMapDelayErrorObserver  io.reactivex.internal.operators.observable.ObservableConcatMap$ConcatMapDelayErrorObserver$DelayErrorInnerObserver  io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver  io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver$InnerObserver
InnerClasses:
  final ConcatMapDelayErrorObserver = io.reactivex.internal.operators.observable.ObservableConcatMap$ConcatMapDelayErrorObserver of io.reactivex.internal.operators.observable.ObservableConcatMap
  final SourceObserver = io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver of io.reactivex.internal.operators.observable.ObservableConcatMap