code: @Override
  	public Double getSchemaVersion() {
  		return template.execute(
  				solrClient -> new Double(new SchemaRequest.SchemaVersion().process(solrClient, collection).getSchemaVersion()));
  	}
docs: /*
  (non-Javadoc)
  @see org.springframework.data.solr.core.schema.SchemaOperations#getSchemaVersion()