# File lib/new_relic/agent/configuration/manager.rb, line 132
        def apply_transformations(key, value)
          if transform = transform_from_default(key)
            begin
              transform.call(value)
            rescue => e
              ::NewRelic::Agent.logger.error("Error applying transformation for #{key}, pre-transform value was: #{value}.", e)
              raise e
            end
          else
            value
          end
        end