TPG SC 13D/A Beneficial ownership report (amended)

Exhibit 11

February 14, 2020

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

This letter confirms that Joshua Peck is authorized and designated to sign all securities-related filings under Sections 13 and 16 of the Securities Exchange Act of 1934, as amended, with the Securities and Exchange Commission, including Form ID, on my behalf.  This authorization and designation shall be valid until December 31, 2021.

Very truly yours,

/s/ Alan Waxman 

Alan Waxman