Can you list the operators used with the modifier operator?

In Jetpack Compose for Android, the modifier operator is used to change the appearance and behavior of UI components. The modifier operator is often used with the following operators (extension functions), which allow combining and modifying modifiers:

• then() — combines two modifiers into one.
• padding() — adds padding around the component.
• background() — sets the background.
• fillMaxWidth(), fillMaxHeight(), size() — set sizes.
• clickable() — makes the component clickable.

Example of combining modifiers:

Modifier
    .padding(16.dp)
    .background(Color.Gray)
    .clickable { /* handle click */ }

Thus, operators with modifier are functions that return a new modifier, changing or adding to the behavior of the UI component.