bundles/org.apache.jasper.glassfish/src/org/apache/jasper/runtime/ProtectedFunctionMapper.java
public Method resolveFunction(String prefix, String localName) {
        if (this.fnmap != null) {
            return this.fnmap.get(prefix + ":" + localName);
        }
	return theMethod;
    }
public Method resolveFunction(String prefix, String localName) {
        if (this.fnmap != null) {
            return this.fnmap.get(prefix + ":" + localName);
        }
	return theMethod;
    }
Resolves the specified local name and prefix into a Java.lang.Method.
Returns null if the prefix and local name are not found.

@param prefix the prefix of the function
@param localName the short name of the function
@return the result of the method mapping.  Null means no entry found.