public void addLineContent(final ZyLineContent line) {
    Preconditions.checkNotNull(line, "Internal Error: Line content can't be null");

    m_content.add(line);
  }
Adds another line add the end of the label content.

@param line The line to add.
java/zylib/src/main/java/com/google/security/zynamics/zylib/gui/zygraph/realizers/ZyLabelContent.java