Same as the preceding overload, using a transparent key type.
Declared in <bslstl_unorderedmultiset.h>
template<class t_KEY>
size_type
erase(t_KEY&& key)
requires BloombergLP::bslmf::IsTransparentPredicate<HASH, t_KEY>::value &&
BloombergLP::bslmf::IsTransparentPredicate<EQUAL,t_KEY>::value &&
!is_convertible<BSLS_COMPILERFEATURES_FORWARD_REF(t_KEY),
iterator>::value &&
!is_convertible<BSLS_COMPILERFEATURES_FORWARD_REF(t_KEY),
const_iterator>::value;