A VendorSpecification represents a gem that has been unpacked into a project and is being loaded through a gem dependencies file through the path: option.

Methods
I
Instance Public methods
install(options)

This is a null install as this gem was unpacked into a directory. options are ignored.

Source: show 

# File lib/rubygems/resolver/vendor_specification.rb, line 19
def install options
  yield nil
end