Found the following apparent S3 methods exported but not registered:
  cdf.betabinomial cdf.betadistribution cdf.binomialdistribution
  cdf.default cdf.discretedistribution cdf.expgamma cdf.fdistribution
  cdf.gammadistribution cdf.normal cdf.poissondistribution
  cdf.tdistribution cdf.uniformdistribution compose.default
  compose.discretedistribution compose.normal
  compose.uniformdistribution conditional.binomialbeta
  conditional.default conditional.mdiscretedistribution
  conditional.mnormal conditional.mnormalexpgamma
  conditional.mnormalgamma conditional.mtdistribution
  conditional.muniformdistribution conditional.normalexpgamma
  conditional.normalgamma contrast.default contrast.mnormalexpgamma
  contrast.mnormalgamma credibilityinterval.betadistribution
  credibilityinterval.default credibilityinterval.expgamma
  credibilityinterval.fdistribution
  credibilityinterval.gammadistribution credibilityinterval.normal
  credibilityinterval.tdistribution difference.default
  difference.normal difference.tdistribution expectation.betabinomial
  expectation.betadistribution expectation.binomialdistribution
  expectation.default expectation.discretedistribution
  expectation.expgamma expectation.fdistribution
  expectation.gammadistribution expectation.mdiscretedistribution
  expectation.mnormal expectation.mnormalexpgamma
  expectation.mnormalgamma expectation.mtdistribution
  expectation.muniformdistribution expectation.normal
  expectation.normalexpgamma expectation.normalgamma
  expectation.poissondistribution expectation.tdistribution
  expectation.uniformdistribution invcdf.betadistribution
  invcdf.binomialdistribution invcdf.default
  invcdf.discretedistribution invcdf.expgamma invcdf.fdistribution
  invcdf.gammadistribution invcdf.normal invcdf.poissondistribution
  invcdf.tdistribution invcdf.uniformdistribution linearpredict.default
  linearpredict.mnormal linearpredict.mnormalexpgamma
  linearpredict.mnormalgamma linearpredict.normal
  linearpredict.normalexpgamma linearpredict.normalgamma
  marginal.binomialbeta marginal.default marginal.mdiscretedistribution
  marginal.mnormal marginal.mnormalexpgamma marginal.mnormalgamma
  marginal.mtdistribution marginal.muniformdistribution
  marginal.normalexpgamma marginal.normalgamma p.value.default
  p.value.expgamma p.value.fdistribution p.value.gammadistribution
  p.value.mnormal p.value.mtdistribution p.value.normal
  p.value.tdistribution precision.betabinomial
  precision.betadistribution precision.binomialdistribution
  precision.default precision.discretedistribution precision.expgamma
  precision.fdistribution precision.gammadistribution
  precision.mdiscretedistribution precision.mnormal
  precision.mnormalexpgamma precision.mnormalgamma
  precision.mtdistribution precision.muniformdistribution
  precision.normal precision.normalexpgamma precision.normalgamma
  precision.poissondistribution precision.tdistribution
  precision.uniformdistribution probability.betabinomial
  probability.binomialdistribution probability.default
  probability.discretedistribution probability.mdiscretedistribution
  probability.poissondistribution probabilitydensity.betadistribution
  probabilitydensity.default probabilitydensity.expgamma
  probabilitydensity.fdistribution probabilitydensity.gammadistribution
  probabilitydensity.mnormal probabilitydensity.mnormalexpgamma
  probabilitydensity.mnormalgamma probabilitydensity.mtdistribution
  probabilitydensity.muniformdistribution probabilitydensity.normal
  probabilitydensity.normalexpgamma probabilitydensity.normalgamma
  probabilitydensity.tdistribution
  probabilitydensity.uniformdistribution variance.betabinomial
  variance.betadistribution variance.binomialdistribution
  variance.default variance.discretedistribution variance.expgamma
  variance.fdistribution variance.gammadistribution
  variance.mdiscretedistribution variance.mnormal
  variance.mnormalexpgamma variance.mnormalgamma
  variance.mtdistribution variance.muniformdistribution variance.normal
  variance.normalexpgamma variance.normalgamma
  variance.poissondistribution variance.tdistribution
  variance.uniformdistribution
See section ‘Registering S3 methods’ in the ‘Writing R Extensions’
manual.