code: public void setHeader(java.util.Collection<String> header) {
          if (header == null) {
              this.header = null;
              return;
          }
  
          this.header = new java.util.ArrayList<String>(header);
      }
docs: <p>
  A list of strings representing column names.
  </p>
  
  @param header
  A list of strings representing column names.