Creates a lattice-form triangle mesh shading (Type 5) from a builder's rows.
public PdfTriangleMeshShading CreateMeshShading(PdfLatticeMeshBuilder mesh, PdfShadingOptions? options)
The mesh: at least two rows; its colour space and function belong to this document.
The optional entries (not ExtendStart or ExtendEnd); null for none.
ISO 32000-2 §8.7.4.5.6, Table 82 (PDF 1.3). Records PDF 1.3. A mutation.