public static Execution onMember(String... groups) {
    return getFunctionExecutionService().onMember(groups);
  }
Returns an {@link Execution} object that can be used to execute a data independent function on
one member of each group provided.

@param groups list of GemFire configuration property "groups" (see
       <a href="../../distributed/DistributedSystem.html#groups"> <code>groups</code></a>) on
       which to execute the function. Function will be executed on one member of each group
@return an {@link Execution} object that can be used to execute a data independent function on
        one member of each group provided

@throws FunctionException if no members are found belonging to the provided groups
@since GemFire 7.0
geode-core/src/main/java/org/apache/geode/cache/execute/FunctionService.java