Can't insert hologram lines at the end using the index

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In HologramPage the insertLine(int, HologramLine) method checks whether the index is bigger or equal to the size
This should only check for bigger indexes because the index of the size itself appends it to the list
https://github.com/DecentSoftware-eu/DecentHolograms/blob/main/src/main/java/eu/decentsoftware/holograms/api/holograms/HologramPage.java#L176

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as reference the docs of add(int, Object) https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/List.html#add(int,java.lang.Object)