Method rtrim

src/common/classes/fb_string.h:412–415

			baseTrim(TrimLeft, ToTrim);
		}
		void rtrim(const_pointer ToTrim = " ")
		{
			baseTrim(TrimRight, ToTrim);
		}
		void trim(const_pointer ToTrim = " ")
		{
			baseTrim(TrimBoth, ToTrim);