def generate_field_report!
      report = field_queries.inject({}) do |report_hash, (k, v)|
        report_hash[k] = solutions_to_hash(v.execute)
        report_hash
      end
      update(field_report: report)
    end
def generate_field_report!
      report = field_queries.inject({}) do |report_hash, (k, v)|
        report_hash[k] = solutions_to_hash(v.execute)
        report_hash
      end
      update(field_report: report)
    end
Generates and saves the field report for the provider, sending SPARQL
 queries as necessary.

 @return [Hash]