The kind of a function object, its FunctionType entry.
public enum PdfFunctionType
ISO 32000-2 §7.10.1, Table 38. Type 1 is not defined.
kind:method, kind:property, kind:ctor. Press Esc to clear.ExponentialAn exponential interpolation function (PDF 1.3) between two sets of coefficients (§7.10.3).PostScriptCalculatorA PostScript calculator function (PDF 1.3): a program in a subset of the PostScript language (§7.10.5).SampledA sampled function (PDF 1.2): a table of sample values with interpolation (§7.10.2).StitchingA stitching function (PDF 1.3): 1-input functions applied over subdomains of one domain (§7.10.4).