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 final class com.google.common.reflect.ImmutableTypeToInstanceMap$Builder<B>
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.google.common.reflect.ImmutableTypeToInstanceMap$Builder
  super_class: java.lang.Object
{
  private final com.google.common.collect.ImmutableMap$Builder<com.google.common.reflect.TypeToken<? extends B>, B> mapBuilder;
    descriptor: Lcom/google/common/collect/ImmutableMap$Builder;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lcom/google/common/collect/ImmutableMap$Builder<Lcom/google/common/reflect/TypeToken<+TB;>;TB;>;

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
         0: .line 65
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 62
            aload 0 /* this */
         2: .line 63
            invokestatic com.google.common.collect.ImmutableMap.builder:()Lcom/google/common/collect/ImmutableMap$Builder;
            putfield com.google.common.reflect.ImmutableTypeToInstanceMap$Builder.mapBuilder:Lcom/google/common/collect/ImmutableMap$Builder;
         3: .line 65
            return
        end local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder<TB;>;

  public <T extends B> com.google.common.reflect.ImmutableTypeToInstanceMap$Builder<B> put(java.lang.Class<T>, T);
    descriptor: (Ljava/lang/Class;Ljava/lang/Object;)Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
        start local 1 // java.lang.Class key
        start local 2 // java.lang.Object value
         0: .line 73
            aload 0 /* this */
            getfield com.google.common.reflect.ImmutableTypeToInstanceMap$Builder.mapBuilder:Lcom/google/common/collect/ImmutableMap$Builder;
            aload 1 /* key */
            invokestatic com.google.common.reflect.TypeToken.of:(Ljava/lang/Class;)Lcom/google/common/reflect/TypeToken;
            aload 2 /* value */
            invokevirtual com.google.common.collect.ImmutableMap$Builder.put:(Ljava/lang/Object;Ljava/lang/Object;)Lcom/google/common/collect/ImmutableMap$Builder;
            pop
         1: .line 74
            aload 0 /* this */
            areturn
        end local 2 // java.lang.Object value
        end local 1 // java.lang.Class key
        end local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder<TB;>;
            0    2     1    key  Ljava/lang/Class<TT;>;
            0    2     2  value  TT;
    Signature: <T:TB;>(Ljava/lang/Class<TT;>;TT;)Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder<TB;>;
    RuntimeInvisibleAnnotations: 
      com.google.errorprone.annotations.CanIgnoreReturnValue()
    MethodParameters:
       Name  Flags
      key    
      value  

  public <T extends B> com.google.common.reflect.ImmutableTypeToInstanceMap$Builder<B> put(com.google.common.reflect.TypeToken<T>, T);
    descriptor: (Lcom/google/common/reflect/TypeToken;Ljava/lang/Object;)Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
        start local 1 // com.google.common.reflect.TypeToken key
        start local 2 // java.lang.Object value
         0: .line 83
            aload 0 /* this */
            getfield com.google.common.reflect.ImmutableTypeToInstanceMap$Builder.mapBuilder:Lcom/google/common/collect/ImmutableMap$Builder;
            aload 1 /* key */
            invokevirtual com.google.common.reflect.TypeToken.rejectTypeVariables:()Lcom/google/common/reflect/TypeToken;
            aload 2 /* value */
            invokevirtual com.google.common.collect.ImmutableMap$Builder.put:(Ljava/lang/Object;Ljava/lang/Object;)Lcom/google/common/collect/ImmutableMap$Builder;
            pop
         1: .line 84
            aload 0 /* this */
            areturn
        end local 2 // java.lang.Object value
        end local 1 // com.google.common.reflect.TypeToken key
        end local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder<TB;>;
            0    2     1    key  Lcom/google/common/reflect/TypeToken<TT;>;
            0    2     2  value  TT;
    Signature: <T:TB;>(Lcom/google/common/reflect/TypeToken<TT;>;TT;)Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder<TB;>;
    RuntimeInvisibleAnnotations: 
      com.google.errorprone.annotations.CanIgnoreReturnValue()
    MethodParameters:
       Name  Flags
      key    
      value  

  public com.google.common.reflect.ImmutableTypeToInstanceMap<B> build();
    descriptor: ()Lcom/google/common/reflect/ImmutableTypeToInstanceMap;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
         0: .line 93
            new com.google.common.reflect.ImmutableTypeToInstanceMap
            dup
            aload 0 /* this */
            getfield com.google.common.reflect.ImmutableTypeToInstanceMap$Builder.mapBuilder:Lcom/google/common/collect/ImmutableMap$Builder;
            invokevirtual com.google.common.collect.ImmutableMap$Builder.build:()Lcom/google/common/collect/ImmutableMap;
            invokespecial com.google.common.reflect.ImmutableTypeToInstanceMap.<init>:(Lcom/google/common/collect/ImmutableMap;)V
            areturn
        end local 0 // com.google.common.reflect.ImmutableTypeToInstanceMap$Builder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/reflect/ImmutableTypeToInstanceMap$Builder<TB;>;
    Signature: ()Lcom/google/common/reflect/ImmutableTypeToInstanceMap<TB;>;
}
Signature: <B:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "ImmutableTypeToInstanceMap.java"
NestHost: com.google.common.reflect.ImmutableTypeToInstanceMap
InnerClasses:
  public Builder = com.google.common.collect.ImmutableMap$Builder of com.google.common.collect.ImmutableMap
  public final Builder = com.google.common.reflect.ImmutableTypeToInstanceMap$Builder of com.google.common.reflect.ImmutableTypeToInstanceMap
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.Beta()