`legacy_parse_example` (same for related functions).
*   New `Variable`s are not added to the same collection several times even if a
    list with duplicates is passed to the constructor.
*   The Python API will now properly set the `list` member of `AttrValue` in
    constructed `GraphDef` messages for empty lists. The serialization of some

                maxLength: 256
                minLength: 1
                type: string
              priority:
                description: Determines ordering of `WasmPlugins` in the same `phase`.
                format: int32
                nullable: true
                type: integer
              selector:
                description: Criteria used to select the specific set of pods/VMs

                maxLength: 256
                minLength: 1
                type: string
              priority:
                description: Determines ordering of `WasmPlugins` in the same `phase`.
                format: int32
                nullable: true
                type: integer
              selector:
                description: Criteria used to select the specific set of pods/VMs