def yank( spec )
      return nil unless remote_gem_file_exist?( spec )
      query = { :gem_name => spec.name, :version => spec.version.to_s, :platform => spec.platform.to_s }
      resource_request( yank_resource, :query => query  )
      return full_uri_to_gem( spec )
    rescue Excon::Errors::Error => e
      raise Stickler::Repository::Error, "Failure yanking: #{e.inspect}"
    end
def yank( spec )
      return nil unless remote_gem_file_exist?( spec )
      query = { :gem_name => spec.name, :version => spec.version.to_s, :platform => spec.platform.to_s }
      resource_request( yank_resource, :query => query  )
      return full_uri_to_gem( spec )
    rescue Excon::Errors::Error => e
      raise Stickler::Repository::Error, "Failure yanking: #{e.inspect}"
    end
See Api#yank