save image in .NET

rule:
  meta:
    name: save image in .NET
    namespace: collection
    authors:
      - michael.hunhoff@mandiant.com
    scopes:
      static: function
      dynamic: unsupported  # requires class features
  features:
    - and:
      - api: System.Drawing.Image::Save
      - optional:
        - class: System.Drawing.Imaging.ImageFormat