static OptionInfo createFromField(Field field) {
Preconditions.checkNotNull(field);
CmdLine cmdLine = field.getAnnotation(CmdLine.class);
if (cmdLine == null) {
throw new Configuration.ConfigurationException(
"No @CmdLine Arg annotation for field " + field);
}
@SuppressWarnings("unchecked")
OptionInfo optionInfo =
new OptionInfo(
checkValidName(cmdLine.name()),
cmdLine.help(),
ArgumentInfo.getArgForField(field),
TypeUtil.getTypeParamTypeToken(field),
field.getDeclaringClass().getCanonicalName(),
Arrays.asList(field.getAnnotations()),
cmdLine.parser());
return optionInfo;
}
