get avatar hash for specified e-mail address concode_field_sep String CHARSET concode_elem_sep int HASH_LENGTH concode_elem_sep String HASH_ALGORITHM concode_field_sep String digest
String function ( final String arg0 ) { if ( TextUtils . isEmpty ( arg0 ) ) { return null ; } final String loc0 = arg0 . trim ( ) . toLowerCase ( US ) ; return loc0 . length ( ) > 0 ? digest ( loc0 ) : null ; }