[Pharo-project] Transform sends to ANSI standard?

Hi folks, I am rewriting packages to be compatible or more portable between Smalltalks. Code Critics gives the following information on my packages: - #cr, #crlf, #lf, #space, #tab, #findTokens:, ... are not part of the ANSI string protocol. - #cr and #lf are not part of the ANSI stream protocol. - The ANSI standard does not support #asInteger and #asString on Object. - Some collection methods are not ANSI compatible: #pairsDo:, #collect:thenDo:, #reject:thenDo:, #detectSum:, #valuesDo:, #keysSortedSafely, #new:withAll:, etc. Does anyone have an idea on how to transform those sends to be ANSI compatible? Best regards, Hernán