Checks the current position against the limit, throwing a {@link BufferUnderflowException} if it is not smaller than the limit, and then increments the position.
@return The current position value, before it is incremented
See Implementation
Checks the current position against the limit, throwing a {@link BufferUnderflowException} if it is not smaller than the limit, and then increments the position.
@return The current position value, before it is incremented