```ruby
require 'haml/version'

# The module that contains everything Haml-related:
#
# * {Haml::Parser} is Haml's parser.
# * {Haml::Compiler} is Haml's compiler.
# * {Haml::Engine} is the class used to render Haml within Ruby code.
# * {Haml::Options} is where Haml's runtime options are defined.
# * {Haml::Engine} is the class used to render Haml within Ruby code.
# * {Haml::Error} is raised when Haml encounters an error.
#
# Also see the {file:REFERENCE.md full Haml reference}.
module Haml

  def self.init_rails(*args)
    # Maintain this as a no-op for any libraries that may be depending on the
    # previous definition here.
  end

end

require 'haml/util'
require 'haml/engine'
require 'haml/railtie' if defined?(Rails)
```

Delete duplicate line in api doc
user
```ruby
require 'haml/version'

# The module that contains everything Haml-related:
#
# * {Haml::Parser} is Haml's parser.
# * {Haml::Compiler} is Haml's compiler.
# * {Haml::Engine} is the class used to render Haml within Ruby code.
# * {Haml::Options} is where Haml's runtime options are defined.
# * {Haml::Error} is raised when Haml encounters an error.
#
# Also see the {file:REFERENCE.md full Haml reference}.
module Haml

  def self.init_rails(*args)
    # Maintain this as a no-op for any libraries that may be depending on the
    # previous definition here.
  end

end

require 'haml/util'
require 'haml/engine'
require 'haml/railtie' if defined?(Rails)
```
assistant