CIESampleAndHold caches values internally for use later in a non-visible
manner to the user of the class. This is a good place for mutable to be
used.
This improves the readability of the GetValue() implementation.
Within the int element handling code, there seems to be a missing
implementation (with the FourCC 'RTOI'), which seems to take two 32-bit
floating point values, multiplies them, then converts the result to a 32-bit
integer.
Applies the override keyword where applicable to indicate visually where
member function overriding is occurring. This only targets
the RuntimeCommonB target as a starting point, which resolves around
900+ cases where the keyword could be used.