Centered & Customizable Marker

Hi, Started using the library and couldn't find a way to have the marker at the centre and not draggable and then have it pick the maps centre location. The map will be draggable. Is this feature available? Also, can we customize the marker?

No file or test is named. Start by locating the Android Google Maps picker entry point and its existing marker behavior, then determine how the selected location is updated. Done means the issue's requested centered, non-draggable marker behavior and marker customization are clearly supported or documented.

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