Constructs a multi surface from a text representation.
SELECT NEW ST_MultiSurface('MultiSurface (((-5 -5, 5 -5, 0 5, -5 -5), (-2 -2, -2 0, 2 0, 2 -2, -2 -2)), ((10 -5, 15 5, 5 5, 10 -5)))')
SQL/MM (ISO/IEC 13249-3: 2006) 9.5.2