question: public static Element createElementInSignature11Space ( Document doc , String elementName ) { if ( doc == null ) { throw new RuntimeException ( "Document is null" ) ; } if ( ( ds11Prefix == null ) || ( ds11Prefix . length ( ) == 0 ) ) { return doc . createElementNS ( Constants . SignatureSpec11NS , elementName ) ; } return doc . createElementNS ( Constants . SignatureSpec11NS , ds11Prefix + ":" + elementName ) ; }
target:  Creates an Element in the XML Signature 1.1 specification namespace.