code: public UpdateCsvClassifierRequest withHeader(String... header) {
          if (this.header == null) {
              setHeader(new java.util.ArrayList<String>(header.length));
          }
          for (String ele : header) {
              this.header.add(ele);
          }
          return this;
      }
docs: <p>
  A list of strings representing column names.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setHeader(java.util.Collection)} or {@link #withHeader(java.util.Collection)} if you want to override the
  existing values.
  </p>
  
  @param header
  A list of strings representing column names.
  @return Returns a reference to this object so that method calls can be chained together.