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.factory.Procedures$SynchronizedProcedure<T> implements org.eclipse.collections.api.block.procedure.Procedure<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure
  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.procedure.Procedure<T> procedure;
    descriptor: Lorg/eclipse/collections/api/block/procedure/Procedure;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lorg/eclipse/collections/api/block/procedure/Procedure<TT;>;

  private void <init>(org.eclipse.collections.api.block.procedure.Procedure<T>);
    descriptor: (Lorg/eclipse/collections/api/block/procedure/Procedure;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure this
        start local 1 // org.eclipse.collections.api.block.procedure.Procedure procedure
         0: .line 217
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 219
            aload 0 /* this */
            aload 1 /* procedure */
            putfield org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure.procedure:Lorg/eclipse/collections/api/block/procedure/Procedure;
         2: .line 220
            return
        end local 1 // org.eclipse.collections.api.block.procedure.Procedure procedure
        end local 0 // org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0       this  Lorg/eclipse/collections/impl/block/factory/Procedures$SynchronizedProcedure<TT;>;
            0    3     1  procedure  Lorg/eclipse/collections/api/block/procedure/Procedure<TT;>;
    Signature: (Lorg/eclipse/collections/api/block/procedure/Procedure<TT;>;)V
    MethodParameters:
           Name  Flags
      procedure  

  public void value();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure this
        start local 1 // java.lang.Object each
         0: .line 225
            aload 1 /* each */
            ifnonnull 3
         1: .line 227
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure.procedure:Lorg/eclipse/collections/api/block/procedure/Procedure;
            aconst_null
            invokeinterface org.eclipse.collections.api.block.procedure.Procedure.value:(Ljava/lang/Object;)V
         2: .line 228
            goto 9
         3: .line 231
      StackMap locals:
      StackMap stack:
            aload 1 /* each */
            dup
            astore 2
            monitorenter
         4: .line 233
            aload 0 /* this */
            getfield org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure.procedure:Lorg/eclipse/collections/api/block/procedure/Procedure;
            aload 1 /* each */
            invokeinterface org.eclipse.collections.api.block.procedure.Procedure.value:(Ljava/lang/Object;)V
         5: .line 231
            aload 2
            monitorexit
         6: goto 9
      StackMap locals: org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure java.lang.Object java.lang.Object
      StackMap stack: java.lang.Throwable
         7: aload 2
            monitorexit
         8: athrow
         9: .line 236
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.Object each
        end local 0 // org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   10     0  this  Lorg/eclipse/collections/impl/block/factory/Procedures$SynchronizedProcedure<TT;>;
            0   10     1  each  TT;
      Exception table:
        from    to  target  type
           4     6       7  any
           7     8       7  any
    Signature: (TT;)V
    MethodParameters:
      Name  Flags
      each  
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Lorg/eclipse/collections/api/block/procedure/Procedure<TT;>;
SourceFile: "Procedures.java"
NestHost: org.eclipse.collections.impl.block.factory.Procedures
InnerClasses:
  public final SynchronizedProcedure = org.eclipse.collections.impl.block.factory.Procedures$SynchronizedProcedure of org.eclipse.collections.impl.block.factory.Procedures