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GPath is a path expression language we've integrated into Groovy which is similar in aims and scope as XPath is to XML.
1. Expression language for tree structured data
2. Implementations for XML
3. Can specify a path to an element
a.b.c -> all the <c> elements inside <b> inside <a>
4. Can specify attributes
a"@href" -> the href attribute of all the a elements

Example

The best example of GPath for xml is test-new/groovy/util/XmlSlurperTest.groovy.

References

Error rendering macro 'link' : Link needs a name and a URL as arguments.
by Jack Herrington.
Error rendering macro 'link' : Link needs a name and a URL as arguments.
.

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