Here is the list of missing javadoc comments:

class javafx.geometry.Point2D
method javafx.geometry.Point2D.getX()
method javafx.geometry.Point2D.getY()

class javafx.geometry.Dimension2D
method javafx.geometry.Dimension2D.getWidth()
method javafx.geometry.Dimension2D.getHeight()

class javafx.geometry.Point3D
method javafx.geometry.Point3D.getX()
method javafx.geometry.Point3D.getY()
method javafx.geometry.Point3D.getZ()

class javafx.scene.Scene
method javafx.scene.Scene.getStylesheets()

class javafx.scene.image.Image
method javafx.scene.image.Image.getRequestedWidth()
method javafx.scene.image.Image.getRequestedHeight()
method javafx.scene.image.Image.isPreserveRatio()
method javafx.scene.image.Image.isSmooth()
method javafx.scene.image.Image.isBackgroundLoading()

class javafx.scene.input.KeyCombination
method javafx.scene.input.KeyCombination.getShift()
method javafx.scene.input.KeyCombination.getControl()
method javafx.scene.input.KeyCombination.getAlt()
method javafx.scene.input.KeyCombination.getMeta()
method javafx.scene.input.KeyCombination.getShortcut()

class javafx.scene.input.InputMethodTextRun
method javafx.scene.input.InputMethodTextRun.getText()
method javafx.scene.input.InputMethodTextRun.getHighlight()

class javafx.scene.input.KeyEvent
method javafx.scene.input.KeyEvent.getCharacter()
method javafx.scene.input.KeyEvent.getText()
method javafx.scene.input.KeyEvent.getCode()
method javafx.scene.input.KeyEvent.isShiftDown()
method javafx.scene.input.KeyEvent.isControlDown()
method javafx.scene.input.KeyEvent.isAltDown()
method javafx.scene.input.KeyEvent.isMetaDown()

class javafx.scene.input.KeyCode
method javafx.scene.input.KeyCode.getName()

class javafx.scene.input.InputMethodEvent
method javafx.scene.input.InputMethodEvent.getComposed()
method javafx.scene.input.InputMethodEvent.getCommitted()
method javafx.scene.input.InputMethodEvent.getCaretPosition()

class javafx.scene.input.KeyCharacterCombination
method javafx.scene.input.KeyCharacterCombination.getCharacter()

class javafx.scene.input.KeyCodeCombination
method javafx.scene.input.KeyCodeCombination.getCode()

class javafx.scene.media.MediaException
method javafx.scene.media.MediaException.getType()

class javafx.scene.paint.Stop
method javafx.scene.paint.Stop.getOffset()
method javafx.scene.paint.Stop.getColor()

class javafx.scene.shape.Path
method javafx.scene.shape.Path.getElements()

class javafx.scene.shape.ArcTo
method javafx.scene.shape.ArcTo.getXAxisRotation()
method javafx.scene.shape.ArcTo.XAxisRotationProperty()

class javafx.scene.shape.Polyline
method javafx.scene.shape.Polyline.getPoints()

class javafx.scene.shape.Polygon
method javafx.scene.shape.Polygon.getPoints()

class javafx.stage.Screen
method javafx.stage.Screen.getBounds()
method javafx.stage.Screen.getVisualBounds()
method javafx.stage.Screen.getDpi()

class javafx.stage.FileChooser
method javafx.stage.FileChooser.getExtensionFilters()

class javafx.stage.Stage
method javafx.stage.Stage.getIcons()