Signature
constructor(signatureAppearanceMode: SignatureAppearance.SignatureAppearanceMode = SignatureAppearanceMode.SIGNATURE_AND_DESCRIPTION, showSignerName: Boolean = true, showSignDate: Boolean = true, showSignatureReason: Boolean = false, showSignatureLocation: Boolean = false, signatureGraphic: SignatureGraphic? = null, signatureWatermark: SignatureGraphic? = null, reuseExistingSignatureAppearanceStream: Boolean = true, showWatermark: Boolean = true, showDateTimezone: Boolean = true)