Returns every spec that has the given full_name
Used to detect if the gem is bundled in older version of Ruby, but not detectable as default gem (see BasicSpecification#default_gem?).
Returns true if the element contains linked content.
Unwinds the states stack because a conflict has been encountered @return [void]
@return [Array<Object>] the list of requirements that led to
`requirement` being required.
Finds a spec and the source_uri it came from for gem gem_name and version. Returns an Array of specs and sources required for installation of the gem.