Query relations between HAPI FHIR implementations and StructureDefinitions programmatically?

Question

As a developer, I can easily find out how the FHIR standard structures are mapped onto HAPI implementation classes - either by reading the documentation or by reviewing the code. For example, I can see that the R4 Patient, which has a resource type of Patient and the profile URL http://hl7.org/fhir/StructureDefinition/Patient is implemented as org.hl7.fhir.r4.model.Patient - not least because this exact information is contained in the @ResourceDef annotation of the class.

Does HAPI FHIR contain any means to access this mapping information programmatically? Specifically, I'd like to be able to find out

• For a given profile URL, is there a HAPI implementation in the current context? (i.e. http://hl7.org/fhir/StructureDefinition/Patient in, org.hl7.fhir.r4.model.Patient.class out)
• Does a given Java type have a resource type and/or a profile URL assigned?