getInt64 method Null safety
override
Returns the (possibly negative) integer represented by the eight bytes at
the specified byteOffset in this object, in two's complement binary
form.
The return value will be between -263 and 263 - 1, inclusive.
Throws RangeError if byteOffset is negative, or
byteOffset + 8 is greater than the length of this object.
Implementation
int getInt64(int byteOffset, [Endian endian = Endian.big]) =>
_data.getInt64(byteOffset, endian);