Extracts the value of the token
tokenName from the attribute
attributeName. Ignores attribute value if value is not of type
String. Returns the entire attribute value if
tokenName is not specified.
Note: This transformer can produce more than one output (in the form of a collection) per single input. Any client of this class should merge the results (e.g. collection.addAll(collection)) into an existing collection.
Transformer input: SearchResult instance
Transformer output: Collection of String instances
TODO refactor into searchresulttoattributelist, attributelisttosingleattribute, attributestringtoattributesubstring
@author mlowery