code: public boolean isCharCommand(final ICmdLineArg<?> argDef)
      {
          return argDef.getKeychar() != null && isCharCommand() && (charCommand() == argDef.getKeychar().charValue());
      }
docs: <p>
  isCharCommand.
  </p>
  
  @param argDef a {@link com.obdobion.argument.type.ICmdLineArg} object.
  @return a boolean.