public DozerBeanMapperBuilder withXmlMapping(Supplier<InputStream> xmlMappingSupplier) {
        this.xmlMappingSuppliers.add(xmlMappingSupplier);
        return this;
    }
Registers a supplier of {@link InputStream} which is expected to contain data of XML mapping file.
At the moment of {@link #create()} method call, suppliers will be called in the order they were registered,
the data of each stream will be read and processed, stream will be immediately closed.
<p>
Please note, XML mappings are processed before fluent builder mappings. Although it is not recommended to mix the approaches.
<p>
By default, no XML mappings are registered.

@param xmlMappingSupplier supplier of a Dozer mapping XML InputStream.
@return modified builder to be further configured.
core/src/main/java/com/github/dozermapper/core/DozerBeanMapperBuilder.java