https://openjdk.java.net/ 
public interface javax.xml.xpath.XPathFunction
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.xml.xpath.XPathFunction
  super_class: java.lang.Object
{
  public abstract java.lang.Object evaluate(java.util.List);
    descriptor: (Ljava/util/List;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws javax.xml.xpath.XPathFunctionException
    MethodParameters:
      Name  Flags
      args  
}
SourceFile: "XPathFunction.java"