Create an empty metric format object. Optionally specify a basicAllocator used to supply memory. If basicAllocator is 0, the currently installed default allocator is used. Note that formatSpec will return 0 for all supplied publication types.
basicAllocator
formatSpec
Declared in <balm_metricformat.h>
<balm_metricformat.h>
MetricFormat(bslma::Allocator* basicAllocator = 0);