https://openjdk.java.net/ 
public interface com.sun.xml.internal.bind.v2.runtime.NamespaceContext2 extends javax.xml.namespace.NamespaceContext
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.xml.internal.bind.v2.runtime.NamespaceContext2
  super_class: java.lang.Object
{
  public abstract java.lang.String declareNamespace(java.lang.String, java.lang.String, boolean);
    descriptor: (Ljava/lang/String;Ljava/lang/String;Z)Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
                Name  Flags
      namespaceUri    
      preferedPrefix  
      requirePrefix   

  public abstract int force(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeInvisibleParameterAnnotations: 
      0:
        com.sun.istack.internal.NotNull()
      1:
        com.sun.istack.internal.NotNull()
    MethodParameters:
        Name  Flags
      uri     
      prefix  
}
SourceFile: "NamespaceContext2.java"