Hello, 
I use MinimumDiameter class with getDiameter method. 
When
 I use this method with POINT in input Geometry the result is a 
LINESTRING. But I find is strange to return a `LINESTRING` because the 
result is a invalid Geometry.
Why the result is not an exception?

For example:
SELECT ST_MinimumDiameter('POINT(395 278)');
-- Answer: LINESTRING(395 278, 395 278)

Thanks for your help.
Mireille                                          
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