https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
public interface com.google.common.collect.ClassToInstanceMap<B> extends java.util.Map<java.lang.Class<? extends B>, B>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.google.common.collect.ClassToInstanceMap
  super_class: java.lang.Object
{
  public abstract <T extends B> T getInstance(java.lang.Class<T>);
    descriptor: (Ljava/lang/Class;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: <T:TB;>(Ljava/lang/Class<TT;>;)TT;
    RuntimeInvisibleAnnotations: 
      com.google.errorprone.annotations.CanIgnoreReturnValue()
    MethodParameters:
      Name  Flags
      type  

  public abstract <T extends B> T putInstance(java.lang.Class<T>, );
    descriptor: (Ljava/lang/Class;Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: <T:TB;>(Ljava/lang/Class<TT;>;TT;)TT;
    RuntimeInvisibleAnnotations: 
      com.google.errorprone.annotations.CanIgnoreReturnValue()
    RuntimeVisibleTypeAnnotations: 
      METHOD_FORMAL_PARAMETER
        org.checkerframework.checker.nullness.qual.Nullable()
    MethodParameters:
       Name  Flags
      type   
      value  
}
Signature: <B:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/Map<Ljava/lang/Class<+TB;>;TB;>;
SourceFile: "ClassToInstanceMap.java"
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.GwtCompatible()