Raised by the DependencyInstaller when a specific gem cannot be found
Creates a new SpecificGemNotFoundException for a gem with the given name and version. Any errors encountered when attempting to find the gem are also stored.
# File rubygems/exceptions.rb, line 95
def initialize(name, version, errors=nil)
super "Could not find a valid gem '#{name}' (#{version}) locally or in a repository"
@name = name
@version = version
@errors = errors
end