This function uses the M_array which provides the threshold which ensures a moment match of 5
thresholdGG(alpha = 1, kappa = 1, gama = 1/2, max_threshold = 200)
Numeric positive integer, the truncation level of the NGG process
Numeric constant. Total mass of the centering measure
Numeric positive constant.
Numeric constant. \(0 \leq Gama \leq 1\).
Numeric positive integer. Maximum allowed value for the threshold
For internal use