I need to call a function when a child element of the date picker is clicked

  handleChange({ startDateObj: date })} placeholderText={placeholderStart} inline locale="en-gb" /> 

There is a toggle function in DropdownParent, I need to call it when the child function handleChange is called, I tried callbacks and other methods, but since it is a library, I don't know how to detect the change and pass it to the parent component to call the parent function.