public static Map<String, Function> getRegisteredFunctions() {
    return getFunctionExecutionService().getRegisteredFunctions();
  }
Returns all locally registered functions

@return A view of registered functions as a Map of {@link Function#getId()} to {@link Function}
@since GemFire 6.0
geode-core/src/main/java/org/apache/geode/cache/execute/FunctionService.java