class ActiveSupport::TimeWithZone

def to_fs(format = :default)

Experimental RBS support (using type sampling data from the type_fusion project). 

def to_fs: (?Symbol format) -> String

This signature was generated using 1 sample from 1 application.

* Any key in Time::DATE_FORMATS can be used. See active_support/core_ext/time/conversions.rb.
* :db - format outputs time in UTC :db time. See Time#to_fs(:db).
* :default - default value, mimics Ruby Time#to_s format.
Accepts an optional format:

This method is aliased to to_formatted_s.

Returns a string of the object's date and time. 
def to_fs(format = :default)
  if format == :db
    utc.to_fs(format)
  elsif formatter = ::Time::DATE_FORMATS[format]
    formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
  else
    # Change to to_s when deprecation is gone.
    "#{time.strftime("%Y-%m-%d %H:%M:%S")} #{formatted_offset(false, 'UTC')}"
  end
end