module Restforce::Concerns::API

def version_guard(version)

the provided version before performing a particular action
Internal: Ensures that the `api_version` set for the Restforce client is at least 
def version_guard(version)
  if version.to_f <= options[:api_version].to_f
    yield
  else
    raise APIVersionError, "You must set an `api_version` of at least #{version} " \
                           "to use this feature in the Salesforce API. Set the " \
                           "`api_version` option when configuring the client - " \
                           "see https://github.com/ejholmes/restforce/blob/master" \
                           "/README.md#api-versions"
  end
end