liquibase-core/src/main/java/liquibase/change/ColumnConfig.java
public boolean hasDefaultValue() {
        return (this.getDefaultValue() != null) || (this.getDefaultValueBoolean() != null) || (this
            .getDefaultValueDate() != null) || (this.getDefaultValueNumeric() != null) || (this
            .getDefaultValueComputed() != null) || (this.getDefaultValueSequenceNext() != null);
    }
public boolean hasDefaultValue() {
        return (this.getDefaultValue() != null) || (this.getDefaultValueBoolean() != null) || (this
            .getDefaultValueDate() != null) || (this.getDefaultValueNumeric() != null) || (this
            .getDefaultValueComputed() != null) || (this.getDefaultValueSequenceNext() != null);
    }
Returns true if any of the setDefaultValue* functions have had a non-null value set