FILE: C:\ProgramData\PuppetLabs\puppet\var\lib\puppet\parser\functions\deprecation.rb

--
#
# deprecation.rb
#
module Puppet::Parser::Functions
  newfunction(:deprecation, :doc => <<-DOC
  @summary
    Function to print deprecation warnings (this is the 3.X version of it).

  The uniqueness key - can appear once. The msg is the message text including any positional
  information that is formatted by the user/caller of the method.).

  @return [String]
    return deprecation warnings
DOC
             ) do |arguments|

    raise(Puppet::ParseError, "deprecation: Wrong number of arguments given (#{arguments.size} for 2)") unless arguments.size == 2

    key = arguments[0]
    message = arguments[1]

    if ENV['STDLIB_LOG_DEPRECATIONS'] == 'true'
      warning("deprecation. #{key}. #{message}")
    end
  end
end

--