need java source files for xml-apis.jar

Is there an equivalent zip file with the bundled java source files for
this particular version of xml-apis.jar which comes with ant 1.5.4?

thanks,

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Manifest-Version: 1.0
Created-By: 1.2.2 (Sun Microsystems Inc.)

Name: javax/xml/transform/
Implementation-Vendor: Sun Microsystems Inc.
Implementation-URL: http://java.sun.com/xml/jaxp.html
Comment: xml-commons for http://xml.apache.org/ subproject's use
Specification-Title: Java API for XML Processing
Specification-Version: 1.1
Implementation-Title: javax.xml.transform
Specification-Vendor: Sun Microsystems Inc.
Implementation-Version: 1.1.2

Name: org/w3c/dom/
Implementation-Vendor: World Wide Web Consortium
Implementation-URL: http://www.w3c.org/DOM/
Comment: xml-commons for http://xml.apache.org/ subproject's use
Specification-Title: Document Object Model, Level 2 Core
Specification-Version: 1.0
Implementation-Title: org.w3c.dom
Specification-Vendor: World Wide Web Consortium
Implementation-Version: 1.0

Name: org/apache/xmlcommons/Version
Implementation-Vendor: Apache Software Foundation
Implementation-URL: http://xml.apache.org/commons/
Comment: XmlCommons for http://xml.apache.org/ subproject's use
Implementation-Title: org.apache.xmlcommons.Version
Implementation-Version: 1.0.b2

Name: javax/xml/parsers/
Implementation-Vendor: Sun Microsystems Inc.
Implementation-URL: http://java.sun.com/xml/jaxp.html
Comment: xml-commons for http://xml.apache.org/ subproject's use
Specification-Title: Java API for XML Processing
Specification-Version: 1.1
Implementation-Title: javax.xml.transform
Specification-Vendor: Sun Microsystems Inc.
Implementation-Version: 1.1.2

Name: org/xml/sax/
Implementation-Vendor: David Megginson
Implementation-URL: http://www.megginson.com/SAX/index.html
Comment: xml-commons for http://xml.apache.org/ subproject's use
Specification-Title: Simple API for XML
Specification-Version: 2.0
Implementation-Title: org.xml.sax
Specification-Vendor: David Megginson
Implementation-Version: 2.0