def METHOD_NAME():
    """Prepare optparser object. New options will be added in this
    function first.
    """
    usage = "usage: %prog <-p STRING -c STRING -m STRING> [options]"
    description = "SNP2PDBSite."
    optparser = OptionParser(version="%prog v1.0", description=description, usage=usage, add_help_option=False)
    optparser.add_option("-h","--help",action="help",help="Show this help message and exit.")
    optparser.add_option("-p","--protId",dest="protId",type="string",
                         help="Enter protein (uniprot) ID.")
    optparser.add_option("-c", "--chain", dest="chain",type="string",
                         help="Enter chain.")
    optparser.add_option("-m", "--mut", dest="mutation",type="string",
                         help="Enter mutation.")
    return optparser