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. 
class com.google.common.collect.ArrayTable$RowMap extends com.google.common.collect.ArrayTable$ArrayMap<R, java.util.Map<C, V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.ArrayTable$RowMap
  super_class: com.google.common.collect.ArrayTable$ArrayMap
{
  final com.google.common.collect.ArrayTable this$0;
    descriptor: Lcom/google/common/collect/ArrayTable;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private void <init>(com.google.common.collect.ArrayTable);
    descriptor: (Lcom/google/common/collect/ArrayTable;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.ArrayTable$RowMap this
         0: .line 722
            aload 0 /* this */
            aload 1
            putfield com.google.common.collect.ArrayTable$RowMap.this$0:Lcom/google/common/collect/ArrayTable;
         1: .line 723
            aload 0 /* this */
            aload 1
            getfield com.google.common.collect.ArrayTable.rowKeyToIndex:Lcom/google/common/collect/ImmutableMap;
            invokespecial com.google.common.collect.ArrayTable$ArrayMap.<init>:(Lcom/google/common/collect/ImmutableMap;)V
         2: .line 724
            return
        end local 0 // com.google.common.collect.ArrayTable$RowMap this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/google/common/collect/ArrayTable$RowMap;
    MethodParameters:
        Name  Flags
      this$0  final

  java.lang.String getKeyRole();
    descriptor: ()Ljava/lang/String;
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.ArrayTable$RowMap this
         0: .line 728
            ldc "Row"
            areturn
        end local 0 // com.google.common.collect.ArrayTable$RowMap this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/ArrayTable$RowMap;

  java.util.Map<C, V> getValue(int);
    descriptor: (I)Ljava/util/Map;
    flags: (0x0000) 
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.google.common.collect.ArrayTable$RowMap this
        start local 1 // int index
         0: .line 733
            new com.google.common.collect.ArrayTable$Row
            dup
            aload 0 /* this */
            getfield com.google.common.collect.ArrayTable$RowMap.this$0:Lcom/google/common/collect/ArrayTable;
            iload 1 /* index */
            invokespecial com.google.common.collect.ArrayTable$Row.<init>:(Lcom/google/common/collect/ArrayTable;I)V
            areturn
        end local 1 // int index
        end local 0 // com.google.common.collect.ArrayTable$RowMap this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/google/common/collect/ArrayTable$RowMap;
            0    1     1  index  I
    Signature: (I)Ljava/util/Map<TC;TV;>;
    MethodParameters:
       Name  Flags
      index  

  java.util.Map<C, V> setValue(int, java.util.Map<C, V>);
    descriptor: (ILjava/util/Map;)Ljava/util/Map;
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.google.common.collect.ArrayTable$RowMap this
        start local 1 // int index
        start local 2 // java.util.Map newValue
         0: .line 738
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 2 // java.util.Map newValue
        end local 1 // int index
        end local 0 // com.google.common.collect.ArrayTable$RowMap this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0      this  Lcom/google/common/collect/ArrayTable$RowMap;
            0    1     1     index  I
            0    1     2  newValue  Ljava/util/Map<TC;TV;>;
    Signature: (ILjava/util/Map<TC;TV;>;)Ljava/util/Map<TC;TV;>;
    MethodParameters:
          Name  Flags
      index     
      newValue  

  public java.util.Map<C, V> put(R, java.util.Map<C, V>);
    descriptor: (Ljava/lang/Object;Ljava/util/Map;)Ljava/util/Map;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.google.common.collect.ArrayTable$RowMap this
        start local 1 // java.lang.Object key
        start local 2 // java.util.Map value
         0: .line 743
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 2 // java.util.Map value
        end local 1 // java.lang.Object key
        end local 0 // com.google.common.collect.ArrayTable$RowMap this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/google/common/collect/ArrayTable$RowMap;
            0    1     1    key  TR;
            0    1     2  value  Ljava/util/Map<TC;TV;>;
    Signature: (TR;Ljava/util/Map<TC;TV;>;)Ljava/util/Map<TC;TV;>;
    MethodParameters:
       Name  Flags
      key    
      value  

  java.lang.Object setValue(int, java.lang.Object);
    descriptor: (ILjava/lang/Object;)Ljava/lang/Object;
    flags: (0x1040) ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            iload 1
            aload 2
            checkcast java.util.Map
            invokevirtual com.google.common.collect.ArrayTable$RowMap.setValue:(ILjava/util/Map;)Ljava/util/Map;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.lang.Object put(java.lang.Object, java.lang.Object);
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.Object
            aload 2
            checkcast java.util.Map
            invokevirtual com.google.common.collect.ArrayTable$RowMap.put:(Ljava/lang/Object;Ljava/util/Map;)Ljava/util/Map;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  java.lang.Object getValue(int);
    descriptor: (I)Ljava/lang/Object;
    flags: (0x1040) ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            iload 1
            invokevirtual com.google.common.collect.ArrayTable$RowMap.getValue:(I)Ljava/util/Map;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lcom/google/common/collect/ArrayTable$ArrayMap<TR;Ljava/util/Map<TC;TV;>;>;
SourceFile: "ArrayTable.java"
NestHost: com.google.common.collect.ArrayTable
InnerClasses:
  private abstract ArrayMap = com.google.common.collect.ArrayTable$ArrayMap of com.google.common.collect.ArrayTable
  private Row = com.google.common.collect.ArrayTable$Row of com.google.common.collect.ArrayTable
  private RowMap = com.google.common.collect.ArrayTable$RowMap of com.google.common.collect.ArrayTable