Ignored vs Assumed Semantics in BDE

BloombergLP::ball::Observer::publish(BloombergLP::ball::Record const&, BloombergLP::ball::Context const&) - Ignored

0000000000414940 <BloombergLP::ball::Observer::publish(BloombergLP::ball::Record const&, BloombergLP::ball::Context const&)>:
M0000000000000000:	retq		;  1 bytes
M0000000000000001:	nopw	%cs:(%rax,%rax)	; 10 bytes
M000000000000000b:	nopl	(%rax,%rax)	;  5 bytes