Looking at the FHIR build process... incrementally.
Generate resource .htm without rebuilding client:
./gradlew generateResources -PfhirBuildDir=/path/to/fhir/svn/trunk/build
Generate example .htm without rebuilding client:
./gradlew generateExamples -PfhirBuildDir=/path/to/fhir/svn/trunk/build
Rebuild client + re-publish:
./gradlew buildAndPublish -PfhirBuildDir=/path/to/fhir/svn/trunk/build