old_contents: # swift_build_support/products/product.py -----------------------*- python -*-
  #
  # This source file is part of the Swift.org open source project
  #
  # Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
  # Licensed under Apache License v2.0 with Runtime Library Exception
  #
  # See https://swift.org/LICENSE.txt for license information
  # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
  #
  # ----------------------------------------------------------------------------
  
  
  class Product(object):
      @classmethod
      def product_name(cls):
          """product_name() -> str
  
          The identifier-style name to use for this product.
          """
          return cls.__name__.lower()
  
      @classmethod
      def product_source_name(cls):
          """product_source_name() -> str
  
          The name of the source code directory of this product.
          It provides a customization point for Product subclasses. It is set to
          the value of product_name() by default for this reason.
          """
          return cls.product_name()
  
      @classmethod
      def get_build_directory_name(cls, host_target):
          return "{}-{}".format(cls.product_name(),
                                host_target.name)
  
      @classmethod
      def is_build_script_impl_product(cls):
          """is_build_script_impl_product -> bool
  
          Whether this product is produced by build-script-impl.
          """
          return True
  
      def do_build(self, host_target):
          """do_build() -> void
  
          Perform the build, for a non-build-script-impl product.
          """
          raise NotImplementedError
  
      def do_test(self, host_target):
          """do_build() -> void
  
          Run the tests, for a non-build-script-impl product.
          """
          raise NotImplementedError
  
      def __init__(self, args, toolchain, source_dir, build_dir):
          self.args = args
          self.toolchain = toolchain
          self.source_dir = source_dir
          self.build_dir = build_dir
          self.cmake_options = []
  
new_contents: # swift_build_support/products/product.py -----------------------*- python -*-
  #
  # This source file is part of the Swift.org open source project
  #
  # Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
  # Licensed under Apache License v2.0 with Runtime Library Exception
  #
  # See https://swift.org/LICENSE.txt for license information
  # See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
  #
  # ----------------------------------------------------------------------------
  
  
  class Product(object):
      @classmethod
      def product_name(cls):
          """product_name() -> str
  
          The identifier-style name to use for this product.
          """
          return cls.__name__.lower()
  
      @classmethod
      def product_source_name(cls):
          """product_source_name() -> str
  
          The name of the source code directory of this product.
          It provides a customization point for Product subclasses. It is set to
          the value of product_name() by default for this reason.
          """
          return cls.product_name()
  
      @classmethod
      def is_build_script_impl_product(cls):
          """is_build_script_impl_product -> bool
  
          Whether this product is produced by build-script-impl.
          """
          return True
  
      def do_build(self, host_target):
          """do_build() -> void
  
          Perform the build, for a non-build-script-impl product.
          """
          raise NotImplementedError
  
      def do_test(self, host_target):
          """do_build() -> void
  
          Run the tests, for a non-build-script-impl product.
          """
          raise NotImplementedError
  
      def __init__(self, args, toolchain, source_dir, build_dir):
          self.args = args
          self.toolchain = toolchain
          self.source_dir = source_dir
          self.build_dir = build_dir
          self.cmake_options = []
  
subject: Remove unused method.