def initialize(options={})
@connection_options = options[:connection_options] || {}
@instrumentor = options[:instrumentor]
@instrumentor_name = options[:instrumentor_name] || 'fog.aws.efs'
@region = options[:region] || 'us-east-1'
@host = options[:host] || "elasticfilesystem.#{@region}.amazonaws.com"
@port = options[:port] || 443
@scheme = options[:scheme] || "https"
@persistent = options[:persistent] || false
@connection = Fog::XML::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", @persistent, @connection_options)
@version = options[:version] || '2015-02-01'
@path = options[:path] || "/#{@version}/"
setup_credentials(options)
end