code: public void setLineCap(@Property.LINE_CAP String value) {
      PropertyValue propertyValue = lineCap(value);
      constantPropertyUsageMap.put(PROPERTY_LINE_CAP, propertyValue);
      layer.setProperties(propertyValue);
    }
docs: Set the LineCap property
  <p>
  The display of line endings.
  </p>
  
  @param value property wrapper value around String