https://github.com/eclipse/eclipse-collections/eclipse-collections: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar 
public final class org.eclipse.collections.impl.block.procedure.FlatCollectProcedure<T, V> implements org.eclipse.collections.api.block.procedure.Procedure<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.block.procedure.FlatCollectProcedure
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private final org.eclipse.collections.api.block.function.Function<? super T, ? extends java.lang.Iterable<V>> function;
    descriptor: Lorg/eclipse/collections/api/block/function/Function;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lorg/eclipse/collections/api/block/function/Function<-TT;+Ljava/lang/Iterable<TV;>;>;

  private final java.util.Collection<V> collection;
    descriptor: Ljava/util/Collection;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Collection<TV;>;

  public void <init>(org.eclipse.collections.api.block.function.Function<? super T, ? extends java.lang.Iterable<V>>, java.util.Collection<V>);
    descriptor: (Lorg/eclipse/collections/api/block/function/Function;Ljava/util/Collection;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.eclipse.collections.impl.block.procedure.FlatCollectProcedure this
        start local 1 // org.eclipse.collections.api.block.function.Function function
        start local 2 // java.util.Collection targetCollection
         0: .line 29
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 33
            aload 0 /* this */
            aload 1 /* function */
            putfield org.eclipse.collections.impl.block.procedure.FlatCollectProcedure.function:Lorg/eclipse/collections/api/block/function/Function;
         2: .line 34
            aload 0 /* this */
            aload 2 /* targetCollection */
            putfield org.eclipse.collections.impl.block.procedure.FlatCollectProcedure.collection:Ljava/util/Collection;
         3: .line 35
            return
        end local 2 // java.util.Collection targetCollection
        end local 1 // org.eclipse.collections.api.block.function.Function function
        end local 0 // org.eclipse.collections.impl.block.procedure.FlatCollectProcedure this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    4     0              this  Lorg/eclipse/collections/impl/block/procedure/FlatCollectProcedure<TT;TV;>;
            0    4     1          function  Lorg/eclipse/collections/api/block/function/Function<-TT;+Ljava/lang/Iterable<TV;>;>;
            0    4     2  targetCollection  Ljava/util/Collection<TV;>;
    Signature: (Lorg/eclipse/collections/api/block/function/Function<-TT;+Ljava/lang/Iterable<TV;>;>;Ljava/util/Collection<TV;>;)V
    MethodParameters:
                  Name  Flags
      function          
      targetCollection  

  public void value();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.procedure.FlatCollectProcedure this
        start local 1 // java.lang.Object object
         0: .line 40
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.procedure.FlatCollectProcedure.function:Lorg/eclipse/collections/api/block/function/Function;
            aload 1 /* object */
            invokeinterface org.eclipse.collections.api.block.function.Function.valueOf:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Iterable
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.procedure.FlatCollectProcedure.collection:Ljava/util/Collection;
            invokestatic org.eclipse.collections.impl.utility.Iterate.addAllIterable:(Ljava/lang/Iterable;Ljava/util/Collection;)Z
            pop
         1: .line 41
            return
        end local 1 // java.lang.Object object
        end local 0 // org.eclipse.collections.impl.block.procedure.FlatCollectProcedure this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/eclipse/collections/impl/block/procedure/FlatCollectProcedure<TT;TV;>;
            0    2     1  object  TT;
    Signature: (TT;)V
    MethodParameters:
        Name  Flags
      object  

  public java.util.Collection<V> getCollection();
    descriptor: ()Ljava/util/Collection;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.block.procedure.FlatCollectProcedure this
         0: .line 45
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.procedure.FlatCollectProcedure.collection:Ljava/util/Collection;
            areturn
        end local 0 // org.eclipse.collections.impl.block.procedure.FlatCollectProcedure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/block/procedure/FlatCollectProcedure<TT;TV;>;
    Signature: ()Ljava/util/Collection<TV;>;
}
Signature: <T:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/lang/Object;Lorg/eclipse/collections/api/block/procedure/Procedure<TT;>;
SourceFile: "FlatCollectProcedure.java"