question: returns the underlying graph . concode_field_sep boolean verbose concode_elem_sep double pvalue concode_elem_sep double alpha concode_elem_sep StandardizedSemIm semIm concode_elem_sep List<Node> _observedVars concode_elem_sep Set<Node> observedVars concode_elem_sep HashSet<IndependenceFact> facts concode_elem_sep SemGraph graph concode_field_sep boolean isIndependent concode_elem_sep boolean isIndependent concode_elem_sep List<Node> getVariables concode_elem_sep List<TetradMatrix> getCovMatrices concode_elem_sep boolean determines concode_elem_sep double getPValue concode_elem_sep int getSampleSize concode_elem_sep double getAlpha concode_elem_sep boolean isDConnectedTo4 concode_elem_sep List<Node> calcVars concode_elem_sep ICovarianceMatrix getCov concode_elem_sep DataSet getData concode_elem_sep void startRecordingFacts concode_elem_sep boolean isVerbose concode_elem_sep List<String> getVariableNames concode_elem_sep void setAlpha concode_elem_sep boolean isDependent concode_elem_sep boolean isDependent concode_elem_sep void setVerbose concode_elem_sep Node getVariable concode_elem_sep List<DataSet> getDataSets concode_elem_sep boolean reachable concode_elem_sep IndependenceTest indTestSubset concode_elem_sep boolean isDSeparated concode_elem_sep boolean isDConnectedToVisit4 concode_elem_sep boolean isAncestor concode_elem_sep HashSet<IndependenceFact> getFacts concode_elem_sep String toString
target: Graph function ( ) { return this . graph ; }