@!visibility private
@param [String] name @param [Object] payload @param [Array<String>] parent_names @param [Object] requirement the requirement that is requiring the child @return [void]
Detaches the {#vertex_named} ‘name` {Vertex} from the graph, recursively removing any non-root vertices that were orphaned in the process @param [String] name @return [Array<Vertex>] the vertices which have been detached
@param [String] name @return [Vertex,nil] the root vertex with the given name
@return [String] An error message that includes requirement trees,
which is much more detailed & customizable than the default message
@param [Hash] opts the options to create a message with. @option opts [String] :solver_name The user-facing name of the solver @option opts [String] :possibility_type The generic name of a possibility @option opts [Proc] :reduce_trees A proc that reduced the list of requirement trees @option opts [Proc] :printable_requirement A proc that pretty-prints requirements @option opts [Proc] :additional_message_for_conflict A proc that appends additional
messages for each conflict
@option opts [Proc] :version_for_spec A proc that returns the version number for a
possibility
Removes a possibility from ‘self` @return [PossibilityState] a state with a single possibility,
the possibility that was removed from `self`
Load extra data embed into binary format String object.