This interface exists to enable stricter type checking
for channels. A method argument or instance variable
in a consumer object can be declared as only a Takable
rather than a Channel, in which case a Java compiler
will disallow put operations.
Full method descriptions appear in the Channel interface.
Return and remove an item from channel only if one is available within
msecs milliseconds. The time bound is interpreted in a coarse
grained, best-effort fashion.
msecs - the number of milliseconds to wait. If less than
or equal to zero, the operation does not perform any timed waits,
but might still require
access to a synchronization lock, which can impose unbounded
delay if there is a lot of contention for the channel.
some item, or null if the channel is empty.
InterruptedException - if the current thread has
been interrupted at a point at which interruption
is detected, in which case state of the channel is unchanged
(i.e., equivalent to a false return).