// UVs
Vector4[] uvs = new Vector4[]
{
    new Vector4( 0.0, 1.0,0.0, 1.0),
    new Vector4( 1.0, 0.0,0.0, 1.0),
    new Vector4( 0.0, 0.0,0.0, 1.0),
    new Vector4( 1.0, 1.0,0.0, 1.0)
};
// Indices of the uvs per each polygon
int[] uvsId = new int[]
{
    0,1,3,2,2,3,5,4,4,5,7,6,6,7,9,8,1,10,11,3,12,0,2,13
};
// Call Common class create mesh using polygon builder method to set mesh instance
Mesh mesh = Common.createMeshUsingPolygonBuilder();
// Create UVset
VertexElementUV elementUV = mesh.createElementUV(TextureMapping.DIFFUSE, MappingMode.POLYGON_VERTEX, ReferenceMode.INDEX_TO_DIRECT);
// Copy the data to the UV vertex element
elementUV.setData(uvs);
elementUV.setIndices(uvsId);