https://openjdk.java.net/ 
public interface javax.xml.crypto.XMLStructure
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.xml.crypto.XMLStructure
  super_class: java.lang.Object
{
  public abstract boolean isFeatureSupported(java.lang.String);
    descriptor: (Ljava/lang/String;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      feature  
}
SourceFile: "XMLStructure.java"