決定するs whether the newly created 支配（する）／統制する should be readonly.
If this argument is true, this does not やむを得ず mean that the 所有物／資産／財産 cannot be
changed at all in the ObjectInspector. Instead, an XPropertyHandler
can still decide that there is a 献身的な UI for entering the 所有物／資産／財産 value,
which is usually 誘発する／引き起こすd by a LineDescriptor::PrimaryButton.
公式文書，認める that this parameter might be ignored if the XObjectInspectorModel::IsReadOnly
せいにする is true, in which 事例／患者 all created 所有物／資産／財産 支配（する）／統制するs must be readonly.
Returns
a 支配（する）／統制する of the given type.
Throws
com::sun::星／主役にする::lang::IllegalArgumentException
if the given ControlType is not a value PropertyControlType
