code: public void setMetadata(java.util.Collection<String> metadata) {
          if (metadata == null) {
              this.metadata = null;
              return;
          }
  
          this.metadata = new com.amazonaws.internal.SdkInternalList<String>(metadata);
      }
docs: <p>
  Additional information about the identified resource. The exact metadata and its order can be obtained by
  inspecting the <a>TrustedAdvisorCheckDescription</a> object returned by the call to
  <a>DescribeTrustedAdvisorChecks</a>. <b>Metadata</b> contains all the data that is shown in the Excel download,
  even in those cases where the UI shows just summary data.
  </p>
  
  @param metadata
  Additional information about the identified resource. The exact metadata and its order can be obtained by
  inspecting the <a>TrustedAdvisorCheckDescription</a> object returned by the call to
  <a>DescribeTrustedAdvisorChecks</a>. <b>Metadata</b> contains all the data that is shown in the Excel
  download, even in those cases where the UI shows just summary data.