getUint64 abstract method
Returns the positive integer represented by the eight bytes starting
at the specified byteOffset
in this object, in unsigned binary
form.
The return value will be between 0 and 264 - 1, inclusive.
The byteOffset
must be non-negative, and
byteOffset + 8
must be less than or equal to the length of this object.
Implementation
int getUint64(int byteOffset, [Endian endian = Endian.big]);