You can search for identifiers within the package.
in-package search v0.2.0
rocq-runtime.engine
MiniEConstr.EInstance
type t = einstance
val make : UVars.Instance.t -> t
val kind : evar_map -> t -> UVars.Instance.t
val empty : t
val is_empty : t -> bool
val unsafe_to_instance : t -> UVars.Instance.t