code: public void setVariableEsc(String variableName, String variableValue) throws VariableNotDefinedException {
          setVariable(variableName, escapeHtml(variableValue), false);
      }
docs: Sets a template variable to an escaped value.
  <p>
  Convenience method for: <code>setVariable (variableName, MiniTemplator.escapeHtml(variableValue), false)</code>
  
  @param variableName the name of the variable to be set. Case-insensitive.
  @param variableValue the new value of the variable. May be <code>null</code>. Special HTML/XML characters are
  escaped.
  @throws VariableNotDefinedException when no variable with the specified name exists in the template.
  @see #setVariable(String, String, boolean)
  @see #escapeHtml(String)