liquibase-core/src/main/java/liquibase/change/ColumnConfig.java
public Object getValueObject() {
        if (getValue() != null) {
            return getValue();
        } else if (getValueBoolean() != null) {
            return getValueBoolean();
        } else if (getValueNumeric() != null) {
            return getValueNumeric();
        } else if (getValueDate() != null) {
            return getValueDate();
        } else if (getValueComputed() != null) {
            return getValueComputed();
        } else if (getValueClobFile() != null) {
            return getValueClobFile();
        } else if (getValueBlobFile() != null) {
            return getValueBlobFile();
        } else if (getValueSequenceNext() != null) {
            return getValueSequenceNext();
        } else if (getValueSequenceCurrent() != null) {
            return getValueSequenceCurrent();
        }
        return null;
    }
public Object getValueObject() {
        if (getValue() != null) {
            return getValue();
        } else if (getValueBoolean() != null) {
            return getValueBoolean();
        } else if (getValueNumeric() != null) {
            return getValueNumeric();
        } else if (getValueDate() != null) {
            return getValueDate();
        } else if (getValueComputed() != null) {
            return getValueComputed();
        } else if (getValueClobFile() != null) {
            return getValueClobFile();
        } else if (getValueBlobFile() != null) {
            return getValueBlobFile();
        } else if (getValueSequenceNext() != null) {
            return getValueSequenceNext();
        } else if (getValueSequenceCurrent() != null) {
            return getValueSequenceCurrent();
        }
        return null;
    }
Return the value from whatever setValue* function was called. Will return null if none were set.