class AWS::Core::Options::Validator

def validate_string rules, value, opt_name, context = nil

Ensures the value is a string. 
def validate_string rules, value, opt_name, context = nil
  unless value.respond_to?(:to_str)
    format_error('string value', opt_name, context)
  end
  rules[:lstrip] ?
    value.to_str.sub(/^#{rules[:lstrip]}/, '') :
    value.to_str
end