old_contents: from enum import Enum, unique
  
  @unique
  class ShaderType(Enum):
      Compute = 0
      Vertex = 1
      TessControl = 2
      TessEvaluation = 3
      Geometry = 4
      Fragment = 5
  
new_contents: """GLSL shader types."""
  
  from enum import Enum, unique
  
  @unique
  class ShaderType(Enum):
      """GLSL shader types."""
      Compute = 0
      Vertex = 1
      TessControl = 2
      TessEvaluation = 3
      Geometry = 4
      Fragment = 5
  
subject: Add docstring