public static Execution onServers(Pool pool) {
    return getFunctionExecutionService().onServers(pool);
  }
Returns an {@link Execution} object that can be used to execute a data independent function on
all the servers in the provided {@link Pool}. If one of the servers goes down while dispatching
or executing the function on the server, an Exception will be thrown.

@param pool the set of servers to execute the function
@return an {@link Execution} object that can be used to execute a data independent function on
        all the servers in the provided {@link Pool}
@throws FunctionException if Pool instance passed in is null
@since GemFire 6.0
geode-core/src/main/java/org/apache/geode/cache/execute/FunctionService.java