def METHOD_NAME():
    if len(sys.argv) != 2:
        print('Usage: {} ROOT-DIR'.format(sys.argv[0]), file=sys.stderr)
        sys.exit(1)
    root = sys.argv[1]
    # Get all commands from dispatch tables
    cmds = []
    for fname in SOURCES:
        cmds += process_commands(os.path.join(root, fname))
    cmds_by_name = {}
    for cmd in cmds:
        cmds_by_name[cmd.name] = cmd
    # Get current convert mapping for client
    client = SOURCE_CLIENT
    mapping = set(process_mapping(os.path.join(root, client)))
    print('* Checking consistency between dispatch tables and vRPCConvertParams')
    # Check mapping consistency
    errors = 0
    for (cmdname, argidx, argname) in mapping:
        try:
            rargnames = cmds_by_name[cmdname].args[argidx].names
        except IndexError:
            print('ERROR: %s argument %i (named %s in vRPCConvertParams) is not defined in dispatch table' % (cmdname, argidx, argname))
            errors += 1
            continue
        if argname not in rargnames:
            print('ERROR: %s argument %i is named %s in vRPCConvertParams but %s in dispatch table' % (cmdname, argidx, argname, rargnames), file=sys.stderr)
            errors += 1
    # Check for conflicts in vRPCConvertParams conversion
    # All aliases for an argument must either be present in the
    # conversion table, or not. Anything in between means an oversight
    # and some aliases won't work.
    for cmd in cmds:
        for arg in cmd.args:
            convert = [((cmd.name, arg.idx, argname) in mapping) for argname in arg.names]
            if any(convert) != all(convert):
                print('ERROR: %s argument %s has conflicts in vRPCConvertParams conversion specifier %s' % (cmd.name, arg.names, convert))
                errors += 1
            arg.convert = all(convert)
    # Check for conversion difference by argument name.
    # It is preferable for API consistency that arguments with the same name
    # have the same conversion, so bin by argument name.
    all_methods_by_argname = defaultdict(list)
    converts_by_argname = defaultdict(list)
    for cmd in cmds:
        for arg in cmd.args:
            for argname in arg.names:
                all_methods_by_argname[argname].append(cmd.name)
                converts_by_argname[argname].append(arg.convert)
    for argname, convert in converts_by_argname.items():
        if all(convert) != any(convert):
            if argname in IGNORE_DUMMY_ARGS:
                # these are testing or dummy, don't warn for them
                continue
            print('WARNING: conversion mismatch for argument named %s (%s)' %
                  (argname, list(zip(all_methods_by_argname[argname], converts_by_argname[argname]))))
    sys.exit(errors > 0)