#[unsafe(no_mangle)]pub unsafe extern "C" fn pamoja_profile_topic(
profile: *const PamojaProfile,
) -> *mut PamojaStringExpand description
Returns the topic a profile publishes each reading to.
§Arguments
profile- the profile.
§Returns
A null-terminated UTF-8 string, which the caller must release with
pamoja_string_free, or null if profile is
null.
§Safety
profile must be a live handle from a call that produced one, or null.