code: private static void collectWheelMetadata(Dependency dependency, File file) {
          final InternetHeaders headers = getManifestProperties(file);
          addPropertyToEvidence(dependency, EvidenceType.VERSION, Confidence.HIGHEST, headers, "Version");
          addPropertyToEvidence(dependency, EvidenceType.PRODUCT, Confidence.HIGHEST, headers, "Name");
          addPropertyToEvidence(dependency, EvidenceType.PRODUCT, Confidence.MEDIUM, headers, "Name");
  
          final String name = headers.getHeader("Name", null);
          final String version = headers.getHeader("Version", null);
          final String packagePath = String.format("%s:%s", name, version);
          dependency.setName(name);
          dependency.setVersion(version);
          dependency.setPackagePath(packagePath);
          dependency.setDisplayFileName(packagePath);
          final String url = headers.getHeader("Home-page", null);
          if (StringUtils.isNotBlank(url)) {
              if (UrlStringUtils.isUrl(url)) {
                  dependency.addEvidence(EvidenceType.VENDOR, METADATA, "vendor", url, Confidence.MEDIUM);
              }
          }
          addPropertyToEvidence(dependency, EvidenceType.VENDOR, Confidence.LOW, headers, "Author");
          final String summary = headers.getHeader("Summary", null);
          if (StringUtils.isNotBlank(summary)) {
              JarAnalyzer.addDescription(dependency, summary, METADATA, "summary");
          }
  
          try {
              final PackageURL purl = PackageURLBuilder.aPackageURL().withType("pypi")
                      .withName(name).withVersion(version).build();
              dependency.addSoftwareIdentifier(new PurlIdentifier(purl, Confidence.HIGHEST));
          } catch (MalformedPackageURLException ex) {
              LOGGER.debug("Unable to build package url for python", ex);
              final GenericIdentifier id = new GenericIdentifier("generic:" + name + "@" + version, Confidence.HIGHEST);
              dependency.addSoftwareIdentifier(id);
          }
      }
docs: Gathers evidence from the METADATA file.
  
  @param dependency the dependency being analyzed
  @param file a reference to the manifest/properties file