https://openjdk.java.net/ 
public interface java.sql.ShardingKeyBuilder
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: java.sql.ShardingKeyBuilder
  super_class: java.lang.Object
{
  public abstract java.sql.ShardingKeyBuilder subkey(java.lang.Object, java.sql.SQLType);
    descriptor: (Ljava/lang/Object;Ljava/sql/SQLType;)Ljava/sql/ShardingKeyBuilder;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
            Name  Flags
      subkey      
      subkeyType  

  public abstract java.sql.ShardingKey build();
    descriptor: ()Ljava/sql/ShardingKey;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.sql.SQLException
}
SourceFile: "ShardingKeyBuilder.java"