Method update

pex/cli/commands/lock.py:386–403

(
        self,
        updates=(),  # type: Iterable[Requirement]
        replacements=(),  # type: Iterable[Requirement]
        deletes=(),  # type: Iterable[ProjectName]
        artifacts_can_change=False,  # type: bool
    )

    _update_requests = attr.ib()  # type: Iterable[ResolveUpdateRequest]

    def update(
        self,
        updates=(),  # type: Iterable[Requirement]
        replacements=(),  # type: Iterable[Requirement]
        deletes=(),  # type: Iterable[ProjectName]
        artifacts_can_change=False,  # type: bool
    ):
        # type: (...) -> Union[LockUpdate, Result]
        if not self._update_requests:
            return self._no_updates()

        return self._lock_updater.update(
            update_requests=self._update_requests,
            updates=updates,
            replacements=replacements,
            deletes=deletes,
            artifacts_can_change=artifacts_can_change,
        )

    def sync(self, requirement_configuration):
        # type: (RequirementConfiguration) -> Union[LockUpdate, Result]