As data frame method.
Usage
as.data.frame(x, row.names = NULL, optional = FALSE, ...)
# S4 method for class 'theta,character,logical'
as.data.frame(x, row.names = NULL, optional = FALSE, ...)
# S4 method for class 'omega,character,logical'
as.data.frame(x, row.names = NULL, optional = FALSE, ...)
# S4 method for class 'sigma,character,logical'
as.data.frame(x, row.names = NULL, optional = FALSE, ...)