Constant META_GITLAB_TRIGGER_KIND 

pub const META_GITLAB_TRIGGER_KIND: &str = "gitlab_trigger_kind";

Marks a Step (GitLab job) that defines a trigger: block (downstream / child pipeline). Value is "static" for a fixed downstream project: or include: of in-tree YAML, and "dynamic" when the include source is an artifact: (dynamic child pipelines — code-injection sink).